Minimum Instream Environmental Flow in Shatt Al-Hillah River
To maintain river flows necessary to meet social and ecological objectives, instream environmental flows are frequently used as a strategy. The capability of three alternative historical flow approaches to protect against low flows is shown in this study using gage stations in the Shatt Al-Hillah R...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of Baghdad
2023-04-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/1798 |
| _version_ | 1797782869100199936 |
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| author | Alaa H. AbdUlameer Al-Sulttani Ali Omran |
| author_facet | Alaa H. AbdUlameer Al-Sulttani Ali Omran |
| author_sort | Alaa H. AbdUlameer |
| collection | DOAJ |
| description |
To maintain river flows necessary to meet social and ecological objectives, instream environmental flows are frequently used as a strategy. The capability of three alternative historical flow approaches to protect against low flows is shown in this study using gage stations in the Shatt Al-Hillah River in Iraq. The extension of the Shatt al-Hillah River is the focus of this research discussion on environmental flow assessment. The available data on discharge in this research were adopted for ten years from 2012-2021. Different flow methods were adopted to establish a minimum environmental flow in the Shatt Al-Hillah River. Three hydrological-based approaches: Tennant, modified Tennant, and low-flow metrics like 7Q10, were used to compare the results of the methods with the provision of a minimal environmental flow. The Tennant method relies on 30 % of the annual discharge rate as the minimum environmental instream flow. The modified Tennant method is based on 30% of the monthly average discharge rate as a minimum environmental instream flow. The 7Q10 method is based on the lowest daily discharge rate in 7 consecutive days for ten years. The results showed that the minimum instream environmental flow given by the Tennant method is 42.26 m3/s while the lowest value of the minimum instream environmental flow obtained from modified Tennant was 37.2 m3/s in January, and the largest value was 47.22 m3/s in August. The one obtained by the 7Q10 method was 50 m3/s in this research.
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| first_indexed | 2024-03-13T00:18:02Z |
| format | Article |
| id | doaj.art-12bdaa6d2ff04644a7184102f85447f4 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-13T00:18:02Z |
| publishDate | 2023-04-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-12bdaa6d2ff04644a7184102f85447f42023-07-11T18:35:20ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392023-04-0129410.31026/j.eng.2023.04.08Minimum Instream Environmental Flow in Shatt Al-Hillah RiverAlaa H. AbdUlameer0Al-Sulttani Ali Omran 1University of Baghdad -college of engineeringUniversity of Baghdad- Collage of engineering To maintain river flows necessary to meet social and ecological objectives, instream environmental flows are frequently used as a strategy. The capability of three alternative historical flow approaches to protect against low flows is shown in this study using gage stations in the Shatt Al-Hillah River in Iraq. The extension of the Shatt al-Hillah River is the focus of this research discussion on environmental flow assessment. The available data on discharge in this research were adopted for ten years from 2012-2021. Different flow methods were adopted to establish a minimum environmental flow in the Shatt Al-Hillah River. Three hydrological-based approaches: Tennant, modified Tennant, and low-flow metrics like 7Q10, were used to compare the results of the methods with the provision of a minimal environmental flow. The Tennant method relies on 30 % of the annual discharge rate as the minimum environmental instream flow. The modified Tennant method is based on 30% of the monthly average discharge rate as a minimum environmental instream flow. The 7Q10 method is based on the lowest daily discharge rate in 7 consecutive days for ten years. The results showed that the minimum instream environmental flow given by the Tennant method is 42.26 m3/s while the lowest value of the minimum instream environmental flow obtained from modified Tennant was 37.2 m3/s in January, and the largest value was 47.22 m3/s in August. The one obtained by the 7Q10 method was 50 m3/s in this research. https://joe.uobaghdad.edu.iq/index.php/main/article/view/1798Environmental FlowShatt Al-Hillah RiverHistorical flow |
| spellingShingle | Alaa H. AbdUlameer Al-Sulttani Ali Omran Minimum Instream Environmental Flow in Shatt Al-Hillah River Journal of Engineering Environmental Flow Shatt Al-Hillah River Historical flow |
| title | Minimum Instream Environmental Flow in Shatt Al-Hillah River |
| title_full | Minimum Instream Environmental Flow in Shatt Al-Hillah River |
| title_fullStr | Minimum Instream Environmental Flow in Shatt Al-Hillah River |
| title_full_unstemmed | Minimum Instream Environmental Flow in Shatt Al-Hillah River |
| title_short | Minimum Instream Environmental Flow in Shatt Al-Hillah River |
| title_sort | minimum instream environmental flow in shatt al hillah river |
| topic | Environmental Flow Shatt Al-Hillah River Historical flow |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/1798 |
| work_keys_str_mv | AT alaahabdulameer minimuminstreamenvironmentalflowinshattalhillahriver AT alsulttanialiomran minimuminstreamenvironmentalflowinshattalhillahriver |